Complicated story, but basically it's this:
My dear Dad died a year ago, leaving 2 old horses, one belonging to him, one to his lady friend.
My uncle (DU) persuaded my cousin, to look after the horses with the estate paying the costs. Everyone felt this was a good solution at the time, but it was assumed by us that the lady friend would make some contribution towards her horse.
It soon became clear that my cousin was finding the care of 2 horses to be very hard, so I asked friends to find other long-term homes as I didn't want to put on cousin.
A home was found for the lady-friend's horse but my cousin refused to let the horse go, saying that the two had to be kept together. It wasn't possible to find a home for the other as she needed medical treatment.
I asked my cousin to respect the lady-friend's wishes and allow the horse to go but my cousin would not do so. Lady-friend refused to pay anything else. My DU was unable to talk sense into my cousin and we could do nothing but accept the situation as we are geographically very distant and could find no other home.
I have now had a very large bill from DU for the cost of both nags for the last year. I am furious. I am very happy to pay for my Dad's horse but absolutely refuse to condone and fund my cousin's actions.
My problem is this: My very dear brother, whom I love to bits and who is always so sensible in these things has said that I should just back off and not send that furious email at this time of year. He would prefer to come to a compromise. I am in absolutely no mood for compromise, but I can see that a lot of pent-up grief has been invested into this, so I am probably not being reasonable. What do you think?